Zero and negative number is not a valid IRQ for in-kernel code and the
irq_of_parse_and_map() function returns zero on error. So this check for
valid IRQs should only accept values > 0.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 2d9e31b9412c ("dmaengine: moxart: remove NO_IRQ")
Signed-off-by: Ma Ke <make24@xxxxxxxxxxx>
---
Changes in v2:
- added Cc stable line;
- added Fixes line.
---
drivers/dma/moxart-dma.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/dma/moxart-dma.c b/drivers/dma/moxart-dma.c
index 66dc6d31b603..16dd3c5aba4d 100644
--- a/drivers/dma/moxart-dma.c
+++ b/drivers/dma/moxart-dma.c
@@ -568,7 +568,7 @@ static int moxart_probe(struct platform_device *pdev)
return -ENOMEM;
irq = irq_of_parse_and_map(node, 0);
- if (!irq) {
+ if (irq <= 0) {
dev_err(dev, "no IRQ resource\n");
return -EINVAL;
}
--
2.25.1
